#ifndef CLight_h
#define CLight_h

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include <d3dx9.h>

class CLightDlg;

class CLight  
{
private:
	D3DLIGHT9 m_light;
	bool m_IsLightEnable;
	D3DCOLOR AmbientColor;	//環境光色
public:
	CLight();
	virtual ~CLight();
	void OpenLight( IDirect3DDevice9 *pD );					//打開光照
	void CloseLight( IDirect3DDevice9 *pD );				//關閉光照

	void SetAmbientColor( DWORD r, DWORD g, DWORD b );		//設置環境光色

	void SetLightType( D3DLIGHTTYPE t );
	void SetDiffuse( float r, float g, float b, float a );	//漫反射
	void SetAmbient( float r, float g, float b, float a );	//環境光
	void SetSpecular( float r, float g, float b, float a );	//鏡面光
	
	void SetPosition( float x, float y, float z );			//設置光源位置
	void SetDirection( float x, float y, float z );			//設置光方向

	void SetRange( float f );		//光照范圍
	void SetFalloff( float f );		//衰減系數
	void SetTheta( float f );		//聚焦光源內錐角
	void SetPhi( float f );			//外錐角

	void SetAttenuation( float f0, float f1, float f2 );	//光強衰減系數

	void SetLight( IDirect3DDevice9 *pD );					//繪制時設置光源

	friend class CLightDlg;
};

#endif